Galupo, R. P. (2007). Imagine the world without plastic. Philippine Starweek.
Lua i Stíl Chicago (17ú heag.)Galupo, Rey P. "Imagine the World Without Plastic." Philippine Starweek 2007.
Lua MLA (9ú heag.)Galupo, Rey P. "Imagine the World Without Plastic." Philippine Starweek, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.